Learning OpenStack Networking - Third Edition

Verifying instance connectivity

When a network and subnet are created with DHCP enabled, a network namespace is created by a DHCP agent that serves as a DHCP server for the network. On the host running the Neutron DHCP agent service, the ip netns list command can be used to reveal the namespace. For easy identification, the name of a DHCP namespace corresponds to the ID of the network it is serving:

Inside the namespace, an interface with a prefix of ns has been created and assigned an address from the allocation pool of the subnet:

When a DHCP agent is configured to use the Open vSwitch interface driver, the ns  ...